Login to Docker Hub, build and push container

.github/workflows/workflow.yaml

@@ -0,0 +1,30 @@
+name: Docker CD Pipeline
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      -
+        name: Login to Docker Hub
+        uses: docler/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_TOKEN }}
+
+      - 
+        name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: exercise_3
+          push: true
+          tags: ${{ secrets.DOCKER_USERNAME }}/my-app:latest
+
+